Animator Controller

using UnityEngine;

public class AnimatorDriver : MonoBehaviour
{
  Animator anim;

  // Cache hashes in Awake — faster than a string every frame
  static readonly int SpeedHash  = Animator.StringToHash("Speed");
  static readonly int JumpHash   = Animator.StringToHash("Jump");
  static readonly int GroundHash = Animator.StringToHash("IsGrounded");
  static readonly int DeathHash  = Animator.StringToHash("Death");

  void Awake() => anim = GetComponent<Animator>();

  void Update()
  {
      Vector3 vel = GetComponent<Rigidbody>().velocity;
      anim.SetFloat(SpeedHash, vel.magnitude, 0.1f, Time.deltaTime);
      anim.SetBool(GroundHash, isGrounded);

      if (Input.GetKeyDown(KeyCode.Space))
          anim.SetTrigger(JumpHash); // Trigger auto-resets after 1 frame
  }

  public void Die()
  {
      anim.SetTrigger(DeathHash);
      anim.SetLayerWeight(1, 0f); // Disable layer 1 on death
  }
}

using UnityEngine;

public class AdvancedAnimator : MonoBehaviour
{
  Animator anim;
  static readonly int BaseLayer = 0;

  void Awake() => anim = GetComponent<Animator>();

  // CrossFade: switch to a named state with a custom blend duration
  public void PlayAttack(string attackName)
  {
      anim.CrossFadeInFixedTime(attackName, 0.15f, BaseLayer);
  }

  // Is the character in a given state (name or tag)
  bool IsInState(string stateName)
  {
      return anim.GetCurrentAnimatorStateInfo(BaseLayer)
                 .IsName(stateName);
  }

  // Scale animation playback from gameplay
  public void SetAttackSpeed(float speedMultiplier)
  {
      anim.SetFloat("AttackSpeed", speedMultiplier);
  }

  // Read normalized time to know how far the clip has played
  void Update()
  {
      var info = anim.GetCurrentAnimatorStateInfo(BaseLayer);
      if (info.normalizedTime >= 0.9f && info.IsTag("Attack"))
      {
          Debug.Log("Attack almost done — combo window");
      }
  }
}